CN106611962A - Chain type cascaded self-synchronizing photovoltaic power generation controlling device and method - Google Patents
Chain type cascaded self-synchronizing photovoltaic power generation controlling device and method Download PDFInfo
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- 238000010248 power generation Methods 0.000 title abstract description 7
- 238000004146 energy storage Methods 0.000 claims abstract description 51
- 230000001360 synchronised effect Effects 0.000 claims abstract description 49
- 239000003990 capacitor Substances 0.000 claims description 17
- 230000036772 blood pressure Effects 0.000 claims description 6
- 230000005611 electricity Effects 0.000 claims description 4
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- H02J3/385—
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02S—GENERATION OF ELECTRIC POWER BY CONVERSION OF INFRARED RADIATION, VISIBLE LIGHT OR ULTRAVIOLET LIGHT, e.g. USING PHOTOVOLTAIC [PV] MODULES
- H02S40/00—Components or accessories in combination with PV modules, not provided for in groups H02S10/00 - H02S30/00
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/50—Photovoltaic [PV] energy
- Y02E10/56—Power conversion systems, e.g. maximum power point trackers
Abstract
A chain type cascaded self-synchronizing photovoltaic power generation controlling device comprises a solar cell panel, an energy storage included synchronous rectification circuit, an H-bridge stacked chain type cascaded grid-connected circuit, a grid-connected control unit, an AC voltage transformer and an AC current transformer. According to the invention, a chain type cascaded stacked grid-connected technology is used, a harmonic wave problem caused by an inverter is solved, included energy storage enables narrow fluctuation of output power of a photovoltaic power generation system, and the controlling device and method are high in the total power generation efficiency, smooth in output fluctuation of photovoltaic power generation and low in harmonic waves and have great significance.
Description
Technical field
The present invention relates to solar energy power generating field, specifically a kind of chain type cascade motor synchronizing solar energy power generating control device
And control method.
Background technology
The energy is that the important substance that the mankind depend on for existence and development is basic, and the key factor for affecting national security.Traditional stone
Change the energy and belong to non-renewable energy resources, be faced with the danger of exhaustion.On the other hand, due to combustion of fossil fuels, cause to air
Serious pollution.
In order to solve energy supply this significant problem, global every country all accelerates the exploitation to new forms of energy.Solar energy
As a kind of clean energy resource, with following feature：First, it is inexhaustible.Second, it is easy to obtain, generally existing.The
Three, cleaning is pollution-free.
The exploitation of solar energy are the problems such as solving energy shortage, environmental pollution and greenhouse effect that traditional fossil energy brings
Effective way, is the preferable alternative energy source of human development.The utilization of solar energy mainly includes solar thermal utilization, and (heating power generates electricity, room
The solar water heater on top etc.), solar electrical energy generation, photochemical utilize.Photovoltaic generation is from remote villages and special applications to simultaneously
Net generating and the direction powered with Integration of building are developed, and photovoltaic generation is from the supplementary energy to alternative energy source transition.
China's photovoltaic generation industry is started in 20 century 70s, enters stable development period, solar-electricity in the mid-90
Pond and module production increase year by year, have leapt to the whole world first at present.
Under a series of stimulation of national preferential policies, China's theCourse of PV Industry is rapid, China's photovoltaic generation of the end of the year in 2012 dress
Machine capacity has reached 7,000,000 kilowatts, and the end of the year in 2013 reaches 17,160,000 kilowatts, has reached 28,050,000 kilowatts within 2014.
China's photovoltaic generation mainly based on large-scale photovoltaic power station, the centralized photovoltaic DC-to-AC converter or group string data photovoltaic inversion of employing
Device, the low problem of generally existing cell panel efficiency, simultaneously because hot spot effect causes cell panel service life low.
The content of the invention
For the problems referred to above, it is an object of the invention to provide a kind of chain type cascade motor synchronizing solar energy power generating control of low cost
Technology, can greatly improve the efficiency of photovoltaic plant, while extending the service life of photovoltaic battery panel, promote China's photovoltaic generation thing
The sound development of industry.
The technical solution of the present invention is as follows：
A kind of chain type cascades motor synchronizing solar energy power generating control device, and its feature is, including solar panel, containing storage
Can circuit of synchronous rectification, the folded ripple chain type cascade parallel network circuit of H bridges, cutting-in control unit, AC voltage transformer and alternating current
Transformer；
The outfan of the solar panel is connected with the input of circuit of synchronous rectification containing energy storage, and this contains energy storage synchronous rectification
The outfan of circuit is connected with the input of the folded ripple chain type cascade parallel network circuit of the H bridges, and the folded ripple chain type of the H bridges cascades grid-connected electricity
The outfan on road is connected with the input of the AC voltage transformer, and the input of the AC current transformer is serially connected with described
The folded ripple chain type of H bridges cascades the outfan of parallel network circuit, and the outfan of the folded ripple chain type cascade parallel network circuit of the H bridges is connected with electrical network；
The signal output part of the AC voltage transformer is connected with the ac voltage signal input of the cutting-in control unit, the friendship
The signal output part of stream current transformer is connected with the ac current signal input of the cutting-in control unit, the cutting-in control
N number of H bridges control signal output of unit cascades the control signal input phase of parallel network circuit respectively with the folded ripple chain type of the H bridges
Even.
Described circuit of synchronous rectification containing energy storage is the circuit of synchronous rectified boost containing energy storage or the reduction voltage circuit of synchronous rectification containing energy storage.
The described circuit of synchronous rectified boost containing energy storage includes boosting reactor, the first power tube, the second power tube, input filter
Electric capacity, output filter capacitor, voltage sensor, current sensor and MPPT controller；Described input filter capacitor is attempted by
Between the both positive and negative polarity of the described input containing energy storage circuit of synchronous rectification, the emitter stage and the second power of described the first power tube
The emitter stage of pipe is connected configuration node, the colelctor electrode and the described negative pole containing energy storage circuit of synchronous rectification of described the first power tube
Circuit is connected, and the colelctor electrode of described the second power tube constitutes the anode of output, one end of described boosting reactor with it is described
The positive pole of input is connected, the other end and the first described power tube, the node phase of the second power tube of described boosting reactor
Even, the control end of first power tube is connected with described the first output signal end of MPPT controller, second power tube
Control signal end is connected with the second output signal end of described MPPT controller, the first described power tube and the second power tube
Control logic is conversely, the voltage signal output end of voltage signal inputs and the described voltage sensor of described MPPT controller
It is connected, the current signal input of described MPPT controller is connected with the current signal output end of described current sensor, institute
The current sense input stated is connected with the negative pole of the described input containing energy storage circuit of synchronous rectification, described voltage sensor
The input of device is connected with the positive pole of the described input containing energy storage circuit of synchronous rectification.
Comprising N number of H-bridge circuit in parallel, each H-bridge circuit includes 4 power to the folded ripple chain type cascade parallel network circuit of the H bridges
Pipe referred to as S1, S2, S3, S4, S1 are serially connected with S2, and S3 is serially connected with S4, and this two string connects together,
The control signal of S1 is identical with the control signal of S3, and the control signal of S2 is identical with the control signal of S4, the control signal of S1
With the control signal of S2 conversely, the control signal input of S1 and S3 is defeated with the control signal first of described cutting-in control unit
Go out end to be connected, second outfan of control signal of the control signal input of described S2 and S4 and described cutting-in control unit
It is connected；
The outfan of N number of H bridges control signal of the cutting-in control unit cascades grid-connected electricity with the folded ripple chain type of described H bridges respectively
The control signal input of N number of H-bridge circuit on road is connected, the ac voltage signal input of described cutting-in control unit and institute
The voltage signal output end of the AC voltage transformer stated is connected, the ac current signal of described cutting-in control unit input it is defeated
Enter end to be connected with the current signal output end of described AC current transformer.
Quantity N of the H-bridge circuit that the folded ripple chain type cascade parallel network circuit of described H bridges is included is 12 or 16.
Described power tube is MOSFET or IGBT switching tubes.
The input of the described synchronous rectified boost circuit of low pressure containing energy storage simultaneously connects an electrochemical capacitor, baby battery or other energy-storage travelling wave tubes.
The solar panel be 1 piece of cell panel, or polylith cell panel series connection, as shown in Figure 5.
Using described chain type cascade universe motor synchronizing solar energy power generating control device, to solar photovoltaic power generation grid-connecting control
Method, the method step are as follows：
Step 1, sets the initial value of cutting-in control unit：
PWM1 initial values are set as 0.8, PWM2 initial values is set as 0.5, set control signal θ angle initial value=0；
Step 2, calculates N number of control signal θ angle value θ angle that the folded ripple chain type of described H bridges cascades parallel network circuit by following equation：
Wherein, θn=n θA-(n-1)θB+N(cosθA-cosθB) to link number, N is bridge module serial number to n,
θA=sin-1A=arcsinA；θB=sin-1B=arcsinB；
A=n/N；B=(n-1)/N；
Step 3, the control of the MPPT controller：
PWM1 initial values are set as 0.8；The MPPT controller by gather the voltage sensor, current sensor it is defeated
Go out signal, rectification control is synchronized to the first described power tube and the second power tube, the maximum work of solar panel is realized
Rate is tracked, and PWM1 increases by 0.01 from the beginning of initial value, every time, till searching peak power.
Compared with prior art, the characteristics of of the invention, is as follows：
1. pair monolithic or several pieces of photovoltaic battery panels carry out MPPT controls, improve the efficiency of photovoltaic plant；
2. photovoltaic battery panel hot spot is solved the problems, such as, the cell panel life-span is extended；
3. cost has been considered, and cost performance is high.
Description of the drawings
Fig. 1 is the schematic diagram that chain type of the present invention cascades motor synchronizing solar energy power generating control device.
Fig. 2 is the circuit diagram of synchronous rectified boost containing energy storage of the present invention.
Fig. 3 is the reduction voltage circuit figure of synchronous rectification containing energy storage of the present invention.
Fig. 4 is the H-bridge circuit block diagram of the present invention.
Fig. 5 is the schematic diagram that 2 pieces of solar panel series connection of employing of the present invention carry out MPPT.
Specific embodiment
With reference to embodiment and accompanying drawing, the invention will be further described, but should not be limited the scope of the invention with this.
Fig. 1 is referred to, Fig. 1 is the schematic diagram that chain type of the present invention cascades motor synchronizing solar energy power generating control device, as schemed institute
Show, a kind of chain type cascades motor synchronizing solar energy power generating control device, including solar panel 2, synchronous rectification containing energy storage
The folded ripple chain type cascade parallel network circuit 4 of circuit 3, H bridges, cutting-in control unit 5, AC voltage transformer 6 and alternating current mutual inductance
Device 7；
The outfan of the solar panel 2 is connected with 3 input of the circuit of synchronous rectification containing energy storage, and this contains energy storage synchronization
The outfan of rectification circuit 3 is connected with the input of the folded ripple chain type cascade parallel network circuit 4 of the H bridges, the folded ripple chain type level of the H bridges
Connection parallel network circuit 4 outfan be connected with the input of the AC voltage transformer 6, the AC current transformer 7 it is defeated
Enter end and be serially connected with the outfan that the folded ripple chain type of the H bridges cascades parallel network circuit 4, the folded ripple chain type cascade parallel network circuit 4 of the H bridges
Outfan be connected with electrical network；The alternating current of the signal output part of the AC voltage transformer 6 and the cutting-in control unit 5
Pressure signal input part is connected, the alternating current of the signal output part of the AC current transformer 7 and the cutting-in control unit 5
Signal input part is connected, and N number of H bridges control signal output of the cutting-in control unit 5 folds ripple chain type with the H bridges respectively
The control signal input of cascade parallel network circuit 4 is connected.
The circuit of synchronous rectification containing energy storage 3 is the circuit of synchronous rectified boost containing energy storage or the reduction voltage circuit of synchronous rectification containing energy storage.
Fig. 2 is the circuit diagram of synchronous rectified boost containing energy storage of the present invention, as illustrated, comprising boosting reactor 8, the first power
Pipe 9, the second power tube 10, input filter capacitor 11, output filter capacitor 12, voltage sensor 13, current sensor 14
With MPPT controller 15；Described input filter capacitor 11 is attempted by the input of described circuit of synchronous rectification containing energy storage 3
Between both positive and negative polarity, the emitter stage of the first described power tube 9 is connected with the emitter stage of the second power tube 10 configuration node, described
The colelctor electrode of the first power tube 9 is connected with the negative pole circuit of described circuit of synchronous rectification containing energy storage 3, the second described power tube
10 colelctor electrode constitutes the anode of output, and one end of described boosting reactor 8 is connected with the positive pole of described input, described
Boosting reactor 8 the other end be connected with the node of the first described power tube 9, the second power tube 10, first power
The control end of pipe 9 is connected with described 15 first output signal end of MPPT controller, the control signal of second power tube 10
End is connected with described 15 second output signal end of MPPT controller, the control of described the first power tube 9 and the second power tube 10
Logic processed is conversely, the voltage signal inputs of described MPPT controller 15 are defeated with the voltage signal of described voltage sensor 13
Go out end to be connected, the described current signal input of MPPT controller 15 is exported with the current signal of described current sensor 14
End is connected, and described 14 input of current sensor is connected with the negative pole of the input of described circuit of synchronous rectification containing energy storage 3,
The input of described voltage sensor 13 is connected with the positive pole of the input of described circuit of synchronous rectification containing energy storage 3.
Fig. 3 is the reduction voltage circuit figure of synchronous rectification containing energy storage of the present invention, as illustrated, including blood pressure lowering reactor 8, the first power
Pipe 9, the second power tube 10, input filter capacitor 11, output filter capacitor 12, voltage sensor 13, current sensor 14
With MPPT controller 15；Described input filter capacitor 11 is attempted by the input of described circuit of synchronous rectification containing energy storage 3
Between both positive and negative polarity, the emitter stage of the first described power tube 9 is connected with the colelctor electrode of the second power tube 10 configuration node, described
The colelctor electrode of the first power tube 9 is connected with the negative pole circuit of described circuit of synchronous rectification containing energy storage 3, the second described power tube
10 emitter stage is connected with the positive pole of described input, one end of described blood pressure lowering reactor 8 and the first described power tube 9,
The node of the second power tube 10 is connected, and the other end of described blood pressure lowering reactor 8 constitutes the anode of outfan, first power
The control end of pipe 9 is connected with described 15 first output signal end of MPPT controller, the control signal of second power tube 10
End is connected with described 15 second output signal end of MPPT controller, the control of described the first power tube 9 and the second power tube 10
Logic processed is conversely, the voltage signal inputs of described MPPT controller 15 are defeated with the voltage signal of described voltage sensor 13
Go out end to be connected, the described current signal input of MPPT controller 15 is exported with the current signal of described current sensor 14
End is connected, and described 14 input of current sensor is connected with the negative pole of the input of described circuit of synchronous rectification containing energy storage 3,
The input of described voltage sensor 13 is connected with the positive pole of the input of described circuit of synchronous rectification containing energy storage 3.
Fig. 4 is the H-bridge circuit block diagram of the present invention, as illustrated, the folded ripple chain type cascade parallel network circuit 4 of H bridges includes N number of parallel connection
H-bridge circuit, each H-bridge circuit includes 4 power tubes referred to as S1, S2, S3, S4, and S1 is serially connected with S2,
S3 is serially connected with S4, and this two string connects together, and the control signal of S1 is identical with the control signal of S3, the control of S2
Signal is identical with the control signal of S4, and the control signal of S1 is with the control signal of S2 conversely, the control signal input of S1 and S3
End is connected with first outfan of control signal of described cutting-in control unit 5, the control signal input of described S2 and S4
It is connected with second outfan of control signal of described cutting-in control unit 5；
The outfan of N number of H bridges control signal of the cutting-in control unit 5 is grid-connected with the folded ripple chain type cascade of described H bridges respectively
The control signal input of N number of H-bridge circuit of circuit 4 is connected, and the ac voltage signal of described cutting-in control unit 5 is input into
End is connected with the voltage signal output end of described AC voltage transformer 6, the alternating current that described cutting-in control unit 5 is input into
The input of stream signal is connected with the current signal output end of described AC current transformer 7；
Quantity N of the H-bridge circuit that the folded ripple chain type cascade parallel network circuit 4 of described H bridges is included is 12 or 16.
Described power tube is MOSFET or IGBT switching tubes.
(3 input simultaneously connects an electrochemical capacitor, baby battery or other energy storage to the described synchronous rectified boost circuit of low pressure containing energy storage
Element.
The solar panel 2 is 1 piece of cell panel, or polylith cell panel serial or parallel connection.
Using described chain type cascade universe motor synchronizing solar energy power generating control device, to solar photovoltaic power generation grid-connecting control
Method, the method step are as follows：
Step 1, sets the initial value of cutting-in control unit 5：
PWM1 initial values are set as 0.8, PWM2 initial values is set as 0.5, set control signal θ angle initial value=0；
Step 2, calculates N number of control signal θ angle value θ that the folded ripple chain type of described H bridges cascades parallel network circuit 4 by following equation
Angle：θn=n θA-(n-1)θB+N(cosθA-cosθB)
Wherein, n is link number, and N is bridge module serial number,
θA=sin-1A=arcsinA；θB=sin-1B=arcsinB；
A=n/N；B=(n-1)/N；
Step 3, the control of the MPPT controller 15：
PWM1 initial values are set as 0.8；The MPPT controller 15 is by gathering the voltage sensor 13, current sense
The output signal of device 14, synchronizes rectification control to the first described power tube 9 and the second power tube 10, realizes solar energy
The maximal power tracing of cell panel 2, PWM1 increase by 0.01 from the beginning of initial value, every time, till searching peak power.
Claims (10)
1. a kind of chain type cascades motor synchronizing solar energy power generating control device, it is characterised in that including solar panel (2),
Folded ripple chain type cascade parallel network circuit (4) of circuit of synchronous rectification containing energy storage (3), H bridges, cutting-in control unit (5), alternating voltage
Transformer (6) and AC current transformer (7)；
The outfan of the solar panel (2) is connected with the circuit of synchronous rectification containing energy storage (3) input, and this contains storage
The outfan of energy circuit of synchronous rectification (3) is connected with the input of folded ripple chain type cascade parallel network circuit (4) of the H bridges, the H
The outfan of folded ripple chain type cascade parallel network circuit (4) of bridge is connected with the input of the AC voltage transformer (6), the friendship
The input of stream current transformer (7) is serially connected with the outfan of folded ripple chain type cascade parallel network circuit (4) of the H bridges, the H
The outfan of folded ripple chain type cascade parallel network circuit (4) of bridge is connected with electrical network；The signal output of the AC voltage transformer (6)
End is connected with the ac voltage signal input of the cutting-in control unit (5), the signal of the AC current transformer (7)
Outfan is connected with the ac current signal input of the cutting-in control unit (5), the N of the cutting-in control unit (5)
Individual H bridges control signal output is connected with the control signal input of folded ripple chain type cascade parallel network circuit (4) of the H bridges respectively.
2. chain type according to claim 1 cascades motor synchronizing solar energy power generating control device, it is characterised in that described
Circuit of synchronous rectification containing energy storage (3) is the circuit of synchronous rectified boost containing energy storage or the reduction voltage circuit of synchronous rectification containing energy storage.
3. chain type according to claim 2 cascades universe motor synchronizing solar energy power generating control device, it is characterised in that institute
The circuit of synchronous rectified boost containing energy storage stated includes boosting reactor (8), the first power tube (9), the second power tube (10), defeated
Enter filter capacitor (11), output filter capacitor (12), voltage sensor (13), current sensor (14) and MPPT control
Device (15)；Described input filter capacitor (11) is just being attempted by the input of described circuit of synchronous rectification containing energy storage (3)
Between negative pole, the emitter stage of described the first power tube (9) is connected with the emitter stage of the second power tube (10) configuration node, institute
The colelctor electrode of the first power tube (9) stated is connected with the negative pole circuit of described circuit of synchronous rectification containing energy storage (3), described
The colelctor electrode of the second power tube (10) constitutes the anode of output, one end of described boosting reactor (8) and described input
Positive pole be connected, the other end and described the first power tube (9), the second power tube (10) of described boosting reactor (8)
Node be connected, the control end of first power tube (9) and described (15) first output signal end phase of MPPT controller
Even, the control signal end of second power tube (10) is connected with described (15) second output signal end of MPPT controller,
The control logic of described the first power tube (9) and the second power tube (10) is conversely, described MPPT controller (15)
Voltage signal inputs are connected with the voltage signal output end of described voltage sensor (13), described MPPT controller (15)
Current signal input be connected with the current signal output end of described current sensor (14), described current sensor (14)
Input is connected with the negative pole of the input of described circuit of synchronous rectification containing energy storage (3), described voltage sensor (13)
Input is connected with the positive pole of the input of described circuit of synchronous rectification containing energy storage (3).
4. chain type according to claim 2 cascades universe motor synchronizing solar energy power generating control device, it is characterised in that institute
The reduction voltage circuit of synchronous rectification containing energy storage stated includes blood pressure lowering reactor (8), the first power tube (9), the second power tube (10), defeated
Enter filter capacitor (11), output filter capacitor (12), voltage sensor (13), current sensor (14) and MPPT control
Device (15)；Described input filter capacitor (11) is just being attempted by the input of described circuit of synchronous rectification containing energy storage (3)
Between negative pole, the emitter stage of described the first power tube (9) is connected with the colelctor electrode of the second power tube (10) configuration node, institute
The colelctor electrode of the first power tube (9) stated is connected with the negative pole circuit of described circuit of synchronous rectification containing energy storage (3), described
The emitter stage of the second power tube (10) is connected with the positive pole of described input, one end of described blood pressure lowering reactor (8) and institute
The first power tube (9) for stating, the node of the second power tube (10) are connected, and the other end of described blood pressure lowering reactor (8) is constituted
The anode of outfan, the control end of first power tube (9) and described (15) first output signal end of MPPT controller
It is connected, the control signal end of second power tube (10) is connected with described (15) second output signal end of MPPT controller,
The control logic of described the first power tube (9) and the second power tube (10) is conversely, described MPPT controller (15)
Voltage signal inputs are connected with the voltage signal output end of described voltage sensor (13), described MPPT controller (15)
Current signal input be connected with the current signal output end of described current sensor (14), described current sensor (14)
Input is connected with the negative pole of the input of described circuit of synchronous rectification containing energy storage (3), described voltage sensor (13)
Input is connected with the positive pole of the input of described circuit of synchronous rectification containing energy storage (3).
5. chain type according to claim 1 cascades motor synchronizing solar energy power generating control device, it is characterised in that described
Comprising N number of H-bridge circuit in parallel, each H-bridge circuit includes 4 power tubes simultaneously to folded ripple chain type cascade parallel network circuit (4) of H bridges
Referred to as S1, S2, S3, S4, S1 are serially connected with S2, and S3 is serially connected with S4, and this two string connects together, S1
Control signal it is identical with the control signal of S3, the control signal of S2 is identical with the control signal of S4, the control signal of S1 with
The control signal of S2 is conversely, the control signal first of the control signal input of S1 and S3 and described cutting-in control unit (5)
Outfan is connected, the control signal second of the control signal input of described S2 and S4 and described cutting-in control unit (5)
Outfan is connected；
The outfan of N number of H bridges control signal of the cutting-in control unit (5) is cascaded with the folded ripple chain type of described H bridges respectively
The control signal input of N number of H-bridge circuit of parallel network circuit (4) is connected, the alternating current of described cutting-in control unit (5)
Pressure signal input part is connected with the voltage signal output end of described AC voltage transformer (6), described cutting-in control unit (5)
The input of the ac current signal of input is connected with the current signal output end of described AC current transformer (7).
6. chain type according to claim 1 cascades motor synchronizing solar energy power generating control device, it is characterised in that described
Quantity N of the H-bridge circuit that folded ripple chain type cascade parallel network circuit (4) of H bridges includes is 12 or 16.
7. chain type according to claim 1 cascades universe motor synchronizing solar energy power generating control device, it is characterised in that institute
The power tube stated is MOSFET or IGBT switching tubes.
8. chain type according to claim 1 cascades universe motor synchronizing solar energy power generating control device, it is characterised in that institute
The input of synchronous rectified boost circuit of the low pressure containing energy storage (3) stated simultaneously connects an electrochemical capacitor, baby battery or other energy-storage travelling wave tubes.
9. chain type according to claim 1 cascades universe motor synchronizing solar energy power generating control device, it is characterised in that institute
Solar panel (2) is stated for 1 piece of cell panel, or polylith cell panel serial or parallel connection.
10. using the chain type cascade universe motor synchronizing solar energy power generating control device described in claim 1, to solar energy
Volt electricity generation grid-connecting control method, it is characterised in that the method step is as follows：
Step 1, sets the initial value of cutting-in control unit (5)：
PWM1 initial values are set as 0.8, PWM2 initial values is set as 0.5, set control signal θ angle initial value=0；
Step 2, calculates N number of control signal θ angle value of folded ripple chain type cascade parallel network circuit (4) of described H bridges by following equation
θ angles：θn=n θA-(n-1)θB+N(cosθA-cosθB)
Wherein, n is link number, and N is bridge module serial number,
θA=sin-1A=arcsinA；θB=sin-1B=arcsinB；
A=n/N；B=(n-1)/N；
Step 3, the control of the MPPT controller (15)：
PWM1 initial values are set as 0.8；The MPPT controller (15) is by gathering the voltage sensor (13), electric current
The output signal of sensor (14), synchronizes rectification control to described the first power tube (9) and the second power tube (10),
The maximal power tracing of solar panel (2) is realized, PWM1 increases by 0.01 from the beginning of initial value, every time, until searching most
Till high-power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510708463.8A CN106611962B (en) | 2015-10-27 | 2015-10-27 | A kind of chain type cascade motor synchronizing solar energy power generating control device and control method |
Applications Claiming Priority (1)
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| CN107565840A (en) * | 2017-10-12 | 2018-01-09 | 合肥工业大学 | The harmonic compensation control method of Cascade H bridge type photovoltaic combining inverter |
| CN110224668A (en) * | 2019-05-13 | 2019-09-10 | 上海空间电源研究所 | A kind of tandem type MPPT energy management system |
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| CN107565840A (en) * | 2017-10-12 | 2018-01-09 | 合肥工业大学 | The harmonic compensation control method of Cascade H bridge type photovoltaic combining inverter |
| CN107565840B (en) * | 2017-10-12 | 2019-08-27 | 合肥工业大学 | The harmonic compensation control method of Cascade H bridge type photovoltaic combining inverter |
| CN110224668A (en) * | 2019-05-13 | 2019-09-10 | 上海空间电源研究所 | A kind of tandem type MPPT energy management system |
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